Nearly Ferromagnetic Spin-Triplet Superconductivity

Author

Sheng Ran
Chris Eckberg
Qing Ping Ding
Yuji Furukawa
Tristin Metz
Shanta R. Saha
I. Lin Liu
Mark Zic
Hyunsoo Kim, Missouri University of Science and TechnologyFollow
For full list of authors, see publisher's website.

Abstract

Spin-triplet superconductors potentially host topological excitations that are of interest for quantum information processing. We report the discovery of spin-triplet superconductivity in UTe₂, featuring a transition temperature of 1.6 kelvin and a very large and anisotropic upper critical field exceeding 40 teslas. This superconducting phase stability suggests that UTe₂ is related to ferromagnetic superconductors such as UGe₂, URhGe, and UCoGe. However, the lack of magnetic order and the observation of quantum critical scaling place UTe₂ at the paramagnetic end of this ferromagnetic superconductor series. A large intrinsic zero-temperature reservoir of ungapped fermions indicates a highly unconventional type of superconducting pairing.

Recommended Citation

S. Ran and C. Eckberg and Q. P. Ding and Y. Furukawa and T. Metz and S. R. Saha and I. L. Liu and M. Zic and H. Kim and For full list of authors, see publisher's website., "Nearly Ferromagnetic Spin-Triplet Superconductivity," Science, vol. 365, no. 6454, pp. 684 - 687, American Association for the Advancement of Science (AAAS), Jan 2019.

The definitive version is available at https://doi.org/10.1126/science.aav8645

Department(s)

Physics

Comments

U.S. Department of Energy, Grant DMR-1610349

International Standard Serial Number (ISSN)

1095-9203; 0036-8075

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2019 American Association for the Advancement of Science (AAAS), All rights reserved.

Publication Date

01 Jan 2019

PubMed ID

31416960